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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Multiple Allele Traits01:49

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Genetic Lingo01:11

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Related Experiment Video

Updated: Jun 21, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

The genetics of multiple sclerosis.

Jan Hillert1

  • 1Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden. Jan.Hillert@ki.se

Results and Problems in Cell Differentiation
|July 8, 2009
PubMed
Summary

Recent advances in genetic analysis have identified more multiple sclerosis (MS) risk variants due to larger study populations. Understanding disease mechanisms requires further research into these genetic factors.

Area of Science:

  • Genetics
  • Neuroimmunology
  • Complex Diseases

Background:

  • Genetic analysis of complex diseases like multiple sclerosis (MS) has historically faced challenges.
  • Recent years have seen significant progress in identifying genetic variants associated with MS.
  • This progress is largely attributed to increased study sample sizes and available genetic variations.

Purpose of the Study:

  • To highlight the recent successes in identifying genetic variants for complex diseases, specifically MS.
  • To emphasize the importance of large-scale studies and genetic variation data.
  • To discuss the ongoing need for functional studies to understand disease mechanisms.

Main Methods:

  • Large-scale genetic association studies.
  • Genotyping of numerous genetic variations.

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Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis
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Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis

Published on: October 13, 2023

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Last Updated: Jun 21, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
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Published on: July 19, 2019

Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis
05:44

Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis

Published on: October 13, 2023

  • Analysis of genetic interplay within key loci like the HLA complex.

    • Main Results:

    • Identification of an increasing number of confirmed disease-promoting or protecting genetic variants in MS.
    • Confirmation that thousands of patients are needed to identify new genes and understand complex genetic interactions.
    • Understanding the genetic interplay within the HLA gene complex in MS.

    Conclusions:

    • Translating gene identification into understanding disease mechanisms requires further methodological and functional studies.
    • Genetic information for MS is unlikely to be useful for genetic counseling or prenatal diagnosis due to limited predictive accuracy.
    • The utility of genetic information lies in revealing disease triggers and understanding tissue damage mechanisms.